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(NOMOdeU 4Sheets-Sheet 1.

' P. OGONNOR.

MOLDING MACHINE.

No. 462,276. Patented N0v.3, 1891.

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v (No Model.) 4 Sheets-Sheet 3.

P. OGONNOR.

MOLDING MACHINE. 7 No. 462,276. Patented Nov. 8, 1891.

(No Model.) 4 Sheets-Sheet 4.

P. OOONNOR. MOLDING MACHINE.

No. 462,276. Patented Nov. 3, 1891.

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UNrrEn STATES PATENT OFFICE.

PATRICK OCONNOR, OF N-ElV HAVEN, CONNECTICUT, ASSIGNOR TO JAMES REYNOLDS, OF SAME PLACE.

MOLDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 462,276, dated November 3, 1891.

Application filed December 30, 1890. Serial No. 376.262. (No model.)

T at whom it may concern.-

Be it known that I, PATRICK OCoNNoR, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Molding-Machines, of which the following is a specification.

My invention relates to improvements in moldingmaohines; and the objects of my im- [0 provement are simplicity in construction, compactness in form, and general efficiency in operation.

In the accompanying drawings, Figure 1 is a side elevation of my machine with the parts in position for drawing down the presserboard. Fig. 2 is alike View of the same with the presser-board drawn down. Fig. 3 is an enlarged partial section on the line was of Fig. 2, the parts not sectioned being shown in front elevation. Fig. 4 is a plan View of the bail or swinging frame that draws down the presser-plate, the pivotal lugs of themain case or frame to which said bail is attached being shown in horizontal section. Figs. 5 and 6 are vertical sections on line y y of Fig. 3, showing the parts in different positions.

Fig. 7 is a vertical section on line .2 of Fig.

3; and Fig.8 is a horizontal section on line 10 w of Fig. 3, the cams and shafts being shown in plan view.

A A designate the rails of the workmans bench or stand, upon which the case or frame B of the machine is supported. This case or frame is substantially in box-like form, with suitable feet or brackets 9 for supporting it upon the bench, and provided at its top with a flange 10, upon which to secure the bed 11. The case or frame Bis provided with inwardly-projecting lugs 12 upon its inside at the.

middle portions of its ends or narrowest sides,

as shown most clearly in Fig. 8, which lugs' project downwardly quite a distance below the base of the frame, as shown in all of the figures excepting Figs. 4 and S. Ahole is bored vertically through each lug to form a guide for the pattern-slide.

13 designates the rods or legs of the pattern-slide, which are guided in the lugs 12, and 14: is the pattern-slide, attached to said rods and bearing any suitable patterns, as 155, which extend up through the bed 11, as shown in Figs. 5 and G. On the under side of the pattern-slide are two pendent frames 15, within which are the slide-operating cams 1G 17, secured to the shaft 18, which has its bearings in the case or frame B and is operated from the outside by means of the lever 19. The cam 16 is between the pendent frames 15 and acts directly upon the under side of the pattern-slide 14 to lift the same, while the cams 17 (one for each of the pendent frames 15) act upon the lower ends of said frames to force the pattern slide downwardly. (See Fig. 6.) Upon the shaft 18 are cams 20, that act upon a cross-bar 21, to which are secured lifting-rods 22, that extend up through the bed 11 to a point directly under the rim of the flask 25, as most clearly shown in Fig.

' The cross-bar 21 is supported on a rod 24, that is guided in a second vertical hole in each of the lugs 12. The flask 23 is provided with suitable perforated cars 25 to receive the dowel-pins 26 of the bed, as in ordinarymolding-machines.

Extending through the case or frame B at a point in front of the shaft 18 is another shaft 27, upon which two toggle-arms 28 are rigidly secured. To the outer ends of these arms other toggle-arms 29 are connected by a hinge-joint, the opposite ends of said arms 29 terminating in a ball-like form, which fits the sockets 30 of the bail or swinging frame C. This frame is pivotallysecured to the case or frame B through the lugs 31, which constitute a part of said case. The forward end of the frame, upon each side of the machine, is provided with short arms 32, to which are pivoted the swinging arms 33 of the presserplate 3i. The outer ends of these arms are threaded and provided with nuts 35 for the purpose of adjusting the presser-plate up or down, as may be desired. The outer end of the shaft 27 is provided with a presser lever 36 for operating said shaft. Springs 37 are placed upon the shaft 27 to balance the press- 5 er-lever 36 and hold it back in position, as shown in Fig. 1, until the operator is ready to draw it forward. The case or frame B is also provided with a stop 38 for the arms of the presser-plate, and said arms are provided with I00 a light spring 39 to hold them against said stop.

The machine being supplied with suitable patterns, the lever 19 is operated. to bring it into the position shown in Figs. 1, 3, and 5 to elevate the pattern-slide, so that the patterns 15 project the desired distance above the bed.

The flask 23 is placed in position and filled .pres'ser-plate 34 into the position shown in Fig. 2 to firmly pack the sand. The pressinglever 36 may then be thrown backward, where it will be held by the springs 37, and the presser-plate also thrown backward out of the way. The lever 19 may now be operated to force the cams 17 upon the pendent frames 15 and bring the pattern-slide downwardly to withdraw the patterns from the sand. The continued motion of the lever and shaft 18 causes the cams 20 to strike against the cross-arms 21 and push the lifting-rods upwardly against the rim of the flask to lift it or loosen it on the dowel-pins 26. Another flask is placed in position and the lever 19 returned to carry the pattern-slide upwardly ready to repeat the operations before described.

WVhile I have shown and described lifting devices for starting the flask off the dowelpins, it is evident that the same may be omitted, if desired, or other lifting devices substituted therefor without any change in the mechanism for packing the flask.

I claim as my invention In a molding-machine, the combination,

' with a mold-support, of the shaft 27, the lever 36, secured to said shaft for turning the same, the swinging bail C, the toggle-arms 28 and 29, one of which iscarried by said shaft and the other of which is seated upon said swinging hail, the pressure-plate 34:,and its arms 33, pivoted to said bail, substantially as described, and for the purpose specified.

PATRICK OCONNOR.

Witnesses:

JAMES P. PIGOTT, WILLIAM S. PARDEE. 

